:root {
    --thanks-bg: #f0f3f8;
    --thanks-surface: #fff;
    --thanks-border: #e4e9f2;
    --thanks-text: #1a2233;
    --thanks-muted: #6b7a90;
    --thanks-accent: #6d5ef7;
    --thanks-accent-soft: #f0edff;
    --thanks-radius: 14px;
    --thanks-shadow: 0 8px 30px rgba(26, 34, 51, 0.06);
    --thanks-header-h: 58px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body.thanks-page {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--thanks-bg);
    color: var(--thanks-text);
    min-height: 100dvh;
    line-height: 1.5;
}

.thanks-header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    height: var(--thanks-header-h);
    padding: 0 20px;
    background: #fff;
    border-bottom: 1px solid var(--thanks-border);
}

.thanks-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--thanks-text);
    flex-shrink: 0;
}

.thanks-brand__icon {
    font-size: 22px;
    color: var(--thanks-accent);
}

.thanks-brand__text {
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.06em;
}

.thanks-brand__text span { color: var(--thanks-accent); }

.thanks-header .site-topnav {
    flex: 1;
    min-width: 0;
}

.thanks-header .lang-switcher {
    flex-shrink: 0;
    display: flex;
    gap: 4px;
    padding: 3px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--thanks-border);
}

.lang-btn {
    min-width: 36px;
    padding: 5px 10px;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: #475569;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    line-height: 1.2;
}

.lang-btn:hover { background: #f1f5f9; }

.lang-btn.active {
    background: var(--thanks-accent);
    color: #fff;
}

.thanks-shell {
    max-width: 760px;
    margin: 0 auto;
    padding: 28px 16px 48px;
}

.thanks-card {
    background: var(--thanks-surface);
    border: 1px solid var(--thanks-border);
    border-radius: var(--thanks-radius);
    box-shadow: var(--thanks-shadow);
    padding: 28px 30px;
}

.thanks-badge {
    display: inline-block;
    margin-bottom: 14px;
    padding: 5px 11px;
    border-radius: 999px;
    background: var(--thanks-accent-soft);
    color: var(--thanks-accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.thanks-title {
    margin: 0 0 14px;
    font-size: clamp(1.45rem, 3vw, 1.9rem);
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: -0.02em;
}

.thanks-lead {
    margin: 0 0 16px;
    font-size: 15px;
    line-height: 1.65;
    color: var(--thanks-muted);
}

.thanks-highlight {
    margin: 20px 0;
    padding: 16px 18px;
    border-radius: 12px;
    background: var(--thanks-accent-soft);
    border: 1px solid #ddd6fe;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.55;
    color: var(--thanks-text);
}

.thanks-list-title {
    margin: 0 0 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--thanks-text);
}

.thanks-list {
    margin: 0 0 24px;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.thanks-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    line-height: 1.55;
    color: var(--thanks-muted);
}

.thanks-list li::before {
    content: '';
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    margin-top: 7px;
    border-radius: 50%;
    background: var(--thanks-accent);
}

.thanks-sponsor {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 0 0 22px;
    padding: 16px 18px;
    border-radius: 12px;
    background: #f8fafc;
    border: 1px solid var(--thanks-border);
}

.thanks-sponsor__logo {
    height: 44px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.thanks-sponsor__name {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--thanks-text);
}

.thanks-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 4px;
    border-top: 1px solid var(--thanks-border);
}

.thanks-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.thanks-btn--primary {
    border: none;
    background: linear-gradient(135deg, #6d5ef7 0%, #4f46e5 100%);
    color: #fff;
    box-shadow: 0 8px 22px rgba(109, 94, 247, 0.28);
}

.thanks-btn--primary:hover {
    transform: translateY(-1px);
}

.thanks-btn--outline {
    border: 1px solid var(--thanks-border);
    background: #fff;
    color: var(--thanks-text);
}

.thanks-btn--outline:hover {
    border-color: var(--thanks-accent);
    color: var(--thanks-accent);
    background: var(--thanks-accent-soft);
}

@media (max-width: 640px) {
    .thanks-shell {
        padding: 16px 12px 32px;
    }

    .thanks-card {
        padding: 20px 18px;
    }

    .thanks-sponsor {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
}